Makita HM 1400 Technical Information page 2

R
epair
1. Replacement of armature and field
Disassembly: follow the next procedure
(1) Take off E-ring, switch lever pin and
switch lever from the handle.
(2) Take off two hexagon socket bolts
M8x40 for mounting handle L and pull
out handle sleeve more than 2mm.
(3) Remove three pan head machine screws
M5x30 mounting handle L and handle R.
Then, take out handle L.
(4) Take off field lead wire from the switch terminal.
(5) Take off two hexagon socket bolts
M8x40 for mounting handle R and take
out handle R from crank housing.
(6) Remove holder cap plate, holder cap and carbon brushes.
(7) Take off four hexagon socket bolts
M6x35 for mounting rear case and remove rear case.
(8) Tap crank housing by resin hammer to remove motor housing.
(9) Motor housing, field, and armature are removed together.
Then, disassemble them in the same way as in other models.
Assembly: Follow the opposite procedure to the disassembly. Make sure of the following points;
(1) Mount screw seal to armature.
(2) First insert armature to crank housing,
then insert motor housing.
(3) Be sure to insert flat washer 24 at assembling rear case.
Ensure the mounting direction of rear case.
(4) Be sure of mounting field lead wire without slack.
2. Other procedures in disassembly and assembly are the same as in #8600S.
Holder cap plate
Rear case
Hexagon socket bolts M6X35
Handle L
Screw seal
Flat washer 24 on the inside
Handle sleeve
Hexagon socket
bolts M8X40
E-ring
Switch lever pin
Switch lever
Handle R
projected part downward